US3284769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording method for fm continuous waves
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1965-05-25
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Granted: 1966-11-08
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Expires: 1985-05-25
Abstract
No abstract record available.
Inventors
- 👤 Jesse D Skelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:02
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/003; G01V1/005; G01V1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |